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Verification of Controlled Closing Method for Unearthed Shunt Capacitor Banks by Simulation  

이우영 (한국전기연구원)
박경엽 (한국전기연구원)
정진교 (한국전기연구원)
김희진 (비츠로테크㈜)
Publication Information
The Transactions of the Korean Institute of Electrical Engineers B / v.52, no.9, 2003 , pp. 448-453 More about this Journal
Abstract
In this paper the controlled closing algorithm of the circuit breaker for isolated capacitor banks is proposed. The characteristics of circuit breakers such as RDDS(rate of decrease of dielectric strength) and a mechanical operating tolerance should be also taken into account to locate contact touch instants around voltage zero. The analysis results on the voltages across circuit breaker terminals upon closing operation play an important roles to describe the suggested method. The simulations carried out in order to verify the performance of this method show that the closing instants obtained from the proposed method provide a good suppression effect on the closing transients for both single and back-to-back capacitor banks.
Keywords
circuit breaker; controlled closing; inrush current; rate of decrease of dielectric strength; shunt capacitor bank;
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  • Reference
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